java.lang.IndexOutOfBoundsException: Invalid line index=1393 >= lineCount=1358
   at org.netbeans.modules.editor.lib2.document.LineElementRoot.getElement(LineElementRoot.java:61)
   at org.openide.text.NbDocument$DocumentRenderer.run(NbDocument.java:920)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1347)
   at org.openide.text.NbDocument$DocumentRenderer.renderToInt(NbDocument.java:895)
   at org.openide.text.NbDocument.findLineOffset(NbDocument.java:202)
   at org.netbeans.modules.merge.builtin.visualizer.MergePanel.showLine12(MergePanel.java:754)
   at org.netbeans.modules.merge.builtin.visualizer.MergePanel.access$000(MergePanel.java:76)
   at org.netbeans.modules.merge.builtin.visualizer.MergePanel$1.run(MergePanel.java:497)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
   at java.awt.EventQueue.access$000(EventQueue.java:101)
   at java.awt.EventQueue$3.run(EventQueue.java:666)
   at java.awt.EventQueue$3.run(EventQueue.java:664)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)